Just quit (update)
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Knowing ICP in psi and IPR duty % while cranking would be useful if his scanner can do it. Also check engine rpm, voltage, injector pulse width in m/s while cranking if live data is available.
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Freshman User
Joined: Jan 2012
Posts: 26
Likes: 0
Finally got a chance to look at my truck again and I hope that I found the problem. I hooked up a clear hose to the fuel bowl drain and turned key on. I am getting alot of air bubbles and then some fuel, more air and then some fuel. I think that my pick up tube is cracked. Is it easier to pull the tank or remove the bed? I have a spray in bed liner so all the bolts are covered. Any suggestions or are there some videos that show tank removal.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,813
Likes: 1,335
From: Elk Grove, CA
Finally got a chance to look at my truck again and I hope that I found the problem. I hooked up a clear hose to the fuel bowl drain and turned key on. I am getting alot of air bubbles and then some fuel, more air and then some fuel. I think that my pick up tube is cracked. Is it easier to pull the tank or remove the bed? I have a spray in bed liner so all the bolts are covered. Any suggestions or are there some videos that show tank removal.
One way to confirm the problem is to remove the fuel line from the suction side of the fuel pump (located on the frame pretty much under the drivers door, has a goofy and problematic quick release) and put a couple feet of fuel hose on and route it into a container of clean fuel. Cycle the key on a few times for like 30 seconds each to let the pump work, then see if the flow out the fuel bowl drain improves. If no change it is likely the pump not the pickup.
Here's a good write up on the Hutch mod and Harpoon while you're in there.
I chose to lift the bed as I was working alone, but in your case I'd drop the tank a la Guzzle.
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Freshman User
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I understand what you are saying about checking the pump but where would the air be coming from if the pump is bad?
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Freshman User
Joined: Jan 2012
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Ok I tried what you said to do. I unhooked the suction side of fuel pump and put a hose on it that went to a can of fuel with the other end. At least 3 gallons in can and hose was at the bottom. I hooked up a clear hose to fuel bowl drain and went to another can. Same result, alot of air in clear hose. Tried it several times and same each time. Is the fuel pump bad and where does the air come from?
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Freshman User
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I have a correction to make. I was using an oversized hose on the outlet side of pump and that was where the air was coming from. I put the correct size on both sides of pump with a clamp and it now pumps a solid stream of fuel from the tank or from a can. I even took the pump completely off and ran it from one can to another and it put out a solid stream of fuel no air. What should the pressure be from the fuel pump and any suggestions on what to try next. I don't want to put my truck in the shop but I may have to if I can't get it going soon.
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
Yes, The Hutch and harpoon mods listed above in post #37. While I admit I haven't done either of these mods, I know any problems fuel related, I will be doing these mods. He even has a link to raise the bed instead of dropping the tank. Read these mods. Guzzle has a very good write up on how to do them, and they have pictures too! Guzzle has a list of parts needed that you could either go buy separately, or you can order a kit from a few different suppliers.
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